package com.cdcas;

public class Book implements Runnable{

    public  Book(){
        System.out.println("book 构造函数");
    }
    public void read() {
        System.out.println("book 中自定义的read方法");
    }

    @Override
    public void run() {
        System.out.println("Book run de方法");
    }
}
